Dear Shuvro,
as Mr. Jnathan said earlier, 1st you have to wait for the next NOC list. as you say your NOC is 1122, this NOC reaches its capacity so fast that you might get only a month to send all your documents. Before next NOC comes out, you can do some important things, these are:
1. prepare all your educational certificates & papers like certificates of SSC & HSC, undergrade/grade school, sealed transcript from your university.
2. sit for IELTS & score atleast 5.5.
3. Get police verification certificate
4. Update your passport
5. update your bank account
6. Get professional certificates from the office you work.
7. Prepare your work experience papers.
8. If you are married, get all documents of your marriage in English
9. Get all previous educational & professional [ if she is also in a profession] documents of your spouse.
10. get birth certificates.
11. prepare all documents for your child.
12. if you have any blood related relatives in Canada, get photocopies of their Canadian passport, driving license, social security card & other documents they have & also their birth certificates from Bangladesh.
so get prepared with all these documents. Please mention if I'm missing something.